text: /*******************************************************************************
  * Copyright (C) 2019 Microchip Technology Inc. and its subsidiaries.
  *
  * Subject to your compliance with these terms, you may use Microchip software
  * and any derivatives exclusively with Microchip products. It is your
  * responsibility to comply with third party license terms applicable to your
  * use of third party software (including open source software) that may
  * accompany Microchip software.
  *
  * THIS SOFTWARE IS SUPPLIED BY MICROCHIP "AS IS". NO WARRANTIES, WHETHER
  * EXPRESS, IMPLIED OR STATUTORY, APPLY TO THIS SOFTWARE, INCLUDING ANY IMPLIED
  * WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY, AND FITNESS FOR A
  * PARTICULAR PURPOSE.
  *
  * IN NO EVENT WILL MICROCHIP BE LIABLE FOR ANY INDIRECT, SPECIAL, PUNITIVE,
  * INCIDENTAL OR CONSEQUENTIAL LOSS, DAMAGE, COST OR EXPENSE OF ANY KIND
  * WHATSOEVER RELATED TO THE SOFTWARE, HOWEVER CAUSED, EVEN IF MICROCHIP HAS
  * BEEN ADVISED OF THE POSSIBILITY OR THE DAMAGES ARE FORESEEABLE. TO THE
  * FULLEST EXTENT ALLOWED BY LAW, MICROCHIP'S TOTAL LIABILITY ON ALL CLAIMS IN
  * ANY WAY RELATED TO THIS SOFTWARE WILL NOT EXCEED THE AMOUNT OF FEES, IF ANY,
  * THAT YOU HAVE PAID DIRECTLY TO MICROCHIP FOR THIS SOFTWARE.
  *******************************************************************************/
  
  #include "device.h"
  #include "plib_clk.h"
  
  
  
  
  
  
  
  /*********************************************************************************
  Initialize PLLA (PLLACK)
  *********************************************************************************/
  
  static void CLK_PLLAInitialize(void)
  {
      /* Configure and Enable PLLA */
      PMC_REGS->CKGR_PLLAR = CKGR_PLLAR_ONE_Msk | CKGR_PLLAR_PLLACOUNT(0x3f) |
                                CKGR_PLLAR_MULA(25 - 1) |
                                CKGR_PLLAR_DIVA(1);
  
      while ( (PMC_REGS->PMC_SR & PMC_SR_LOCKA_Msk) != PMC_SR_LOCKA_Msk);
  
  }
  
  
  
  /*********************************************************************************
  Initialize Master clock (MCK)
  *********************************************************************************/
  
  static void CLK_MasterClockInitialize(void)
  {
      /* Program PMC_MCKR.PRES and wait for PMC_SR.MCKRDY to be set   */
      PMC_REGS->PMC_MCKR = (PMC_REGS->PMC_MCKR & ~PMC_MCKR_PRES_Msk) | PMC_MCKR_PRES_CLK_1;
      while ((PMC_REGS->PMC_SR & PMC_SR_MCKRDY_Msk) != PMC_SR_MCKRDY_Msk);
  
      /* Program PMC_MCKR.MDIV and Wait for PMC_SR.MCKRDY to be set   */
      PMC_REGS->PMC_MCKR = (PMC_REGS->PMC_MCKR & ~PMC_MCKR_MDIV_Msk) | PMC_MCKR_MDIV_PCK_DIV2;
      while ((PMC_REGS->PMC_SR & PMC_SR_MCKRDY_Msk) != PMC_SR_MCKRDY_Msk);
  
      /* Program PMC_MCKR.CSS and Wait for PMC_SR.MCKRDY to be set    */
      PMC_REGS->PMC_MCKR = (PMC_REGS->PMC_MCKR & ~PMC_MCKR_CSS_Msk) | PMC_MCKR_CSS_PLLA_CLK;
      while ((PMC_REGS->PMC_SR & PMC_SR_MCKRDY_Msk) != PMC_SR_MCKRDY_Msk);
  
  }
  
  
  
  
  
  
  
  
  /*********************************************************************************
  Clock Initialize
  *********************************************************************************/
  void CLOCK_Initialize( void )
  {
  
  
  
      /* Initialize PLLA */
      CLK_PLLAInitialize();
  
  
      /* Initialize Master Clock */
      CLK_MasterClockInitialize();
  
  
  
  
      /* Enable Peripheral Clock */
      PMC_REGS->PMC_PCER0=0x8b1e00;
      PMC_REGS->PMC_PCER1=0x4010000;
  }
  